We had a baby bjorn sling for ds, and I found that even with that - which was very comfortable and meant that you were evenly balanced and not all the weight was on one shoulder etc, that I couldn't really carry him beyond about 4 months if I was going any distance - just too heavy. So it was back to the buggy which was a dream to push then. Now, its a bit more effort trying to get ds (tired after probably 2.5miles) up the hill back to the car.
BB - laptop - can sympathise. I ended up carrying laptop in simple slip-in case that only carried laptop, and having another case with any papers etc on the other shoulder. Less convenient, but only way to avoid the osteopath.
Fi - dog leads on buggy. We swore that we would never do this, our dog having been tied to a chair outside local shop (where she'd been tied before) while I went in to get a loaf. Part way through transaction heard a noise, looked round, dog on the otherside of busy main road (luckily, traffic stopped) with chair in pursuit, crossed another road (traffic stopped due to red light, but chair damaged car on way past), back over main road (still very slow due to initial shock), up towards our road, crossing another road, down our road.... Luckily for me, someone in a car saw what happened and followed her in a car, then, when she ran up a driveway (having passed ours a long way back), drove in to block it and catch her. (Dog shaken up but OK) We have been true to this and have never tied her to the buggy even when ds not in it. Problem is now that he wants to hold her lead and I'm not allowed to hold it or add a 2nd lead. Luckily dog quite well behaved and I can control her fairly well without use of lead, but insist that ds holding my hand if he's going to hold her lead, just in case!
Yes, it is a bit quiet here isn't it. I wonder where everyone has got to. I suppose that some lucky people may be on holiday of course.